Wheel hub bearing assembly 1.Materials: GCr15 100Cr6 2.OEM available 3.ISO9000/TS16949 factory Wheel Bearing Kit Assembly for BMW series1. IXIN provide over 600 types wheel bearing kit & hub assembly. Generation 1 (1st generation): Angular ball bearing – double row Bearings in general:Generation 2 (2nd Generation): In Second Generation Wheel Hub Bearing are very light weight, maintenance-free ...